Used GXGPRS for Windows?
Developer’s Description
By Gurux
GXGPRS offers an easy way to build multithreaded, GPRS communication applications. GXGPRS is made on the Windows API interface, is very efficient and does not require external libraries or DLL files to operate. The component is easy to use with different development tools (such as Access, Delphi, Visual Basic, Java, or Visual C++). With the component you get a Visual Basic sample of how to use the communication technique.